<!--
 * @Author: your name
 * @Date: 2021-01-01 16:10:48
 * @LastEditTime: 2021-01-02 10:39:48
 * @LastEditors: Please set LastEditors
 * @Description: In User Settings Edit
 * @FilePath: \xu\shop_manager\shop_vue\src\components\power\Roles.vue
-->
<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addDialogVisible=true">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <!-- 展开列 -->
        <el-table-column type="expand">
          <template v-slot="scope">
            <el-row :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <el-row :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row, item2.id)">{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag v-for="item3 in item2.children" :key="item3.id" type="warning"
                    closable @close="removeRightById(scope.row, item3.id)">
                      {{item3.authName}}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template v-slot="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeByRoleId(scope.row.id)">删除</el-button>
            <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 添加角色的对话框 -->
    <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible=false">取消</el-button>
        <el-button type="primary" @click="addRole">确定</el-button>
      </span>
    </el-dialog>
    <!-- 修改角色的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="角色名称">
          <el-input v-model="editForm.roleName" prop="roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible=false">取消</el-button>
        <el-button type="primary" @click="editRoleInfo">确定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限的对话框 -->
    <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDialogClosed">
      <!-- 树形控件 -->
      <el-tree :data="rightslist" :props="treeProps" show-checkbox 
      node-key="id" default-expand-all :default-checked-keys="defKeys"
      ref="treeRef"></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible=false">取消</el-button>
        <el-button type="primary" @click="allotRights">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
      addDialogVisible: false,
      addForm: {
        roleName: '',
        roleDesc: ''
      },
      addFormRules: {
        roleName: [
          {required: true, message: '请输入角色名称', trigger: 'blur'},
        ],
        roleDesc: [
          {required: true, message: '请输入角色描述', trigger: 'blur'}
        ]
      },
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        roleName: [
          {required: true, message: '请输入角色名称', trigger: 'blur'}
        ],
        roleDesc: [
          {required: true, message: '请输入角色描述', trigger: 'blur'}
        ]
      },
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      rightslist: [],
      // 树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children'
      },
      // 默认选中的节点Id值
      defKeys: [105, 116],
      // 当前即将分配权限的id
      roleId: ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    // 获取所有角色的列表
    async getRolesList() {
      const {data: res} = await this.$http.get('roles')
      if(res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.rolelist = res.data
    },
    // 点击按钮添加角色
    async addRole() {
      this.$refs.addFormRef.validate(async valid => {
        if(!valid) return
        // 发起添加角色的请求
        const {data: res} = await this.$http.post('roles', this.addForm)
        if(res.meta.status !== 201) {
          this.$message.error('添加角色失败')
        }
        this.$message.success('添加角色成功')
        // 隐藏添加角色的对话框
        this.addDialogVisible = false
        // 刷新角色列表
        this.getRolesList()
      })
    },
    // 监听添加角色对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 展示编辑角色信息的对话框
    async showEditDialog(id) {
      const {data: res} = await this.$http.get('roles/'+ id)
      if(res.meta.status !== 200) {
        return this.$message.error('没有查询到角色信息')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 修改角色信息并提交
    editRoleInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) return
        const {data: res} = await this.$http.put('roles/'+ this.editForm.roleId,
        {
          roleName: this.editForm.roleName,
          roleDesc: this.editForm.roleDesc
        })
          console.log(res)
        if(res.meta.status !== 200) {
          return this.$message.error('更新角色信息失败')
        }
        // 关闭修改角色对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getRolesList()
        this.$message.success('更新角色信息成功')
      })
    },
    // 监听修改角色信息对话框的关闭事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 根据角色信息删除对应的角色信息
    async removeByRoleId(id) {
      const confirmResult = await this.$confirm('此操作将永久删除该角色，是否继续？', '提示',
      {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除，则返回值为字符串confirm
      // 如果用户取消了删除，则返回值为字符串cancel
      if(confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      // 删除
      const {data: res} = await this.$http.delete('roles/' + id)
      if(res.meta.status !== 200) {
        this.$message.error('删除角色数据失败')
      }
      this.$message.success('删除角色数据成功')
      this.getRolesList()
    },
    async removeRightById(role, rightId) {
      // 弹框提示用户是否要删除
      const confiremResult = await this.$confirm('此操作将永久删除该文件，是否继续？','提示',
      {
        confirmButtonText: '确认',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if(confiremResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }
      const {data: res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
      if(res.meta.status !== 200) {
        return this.$message.error('删除权限失败')
      }
      this.$message.success('删除权限成功')
      role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      // 获取所有权限的数据
      const {data: res} = await this.$http.get('rights/tree')
      if(res.meta.status !== 200) {
        return this.$message.error('获取权限数据失败')
      }
      // 把获取到的权限数据存到data中
      this.rightslist = res.data
      // 递归获取三级节点的id
      this.getLeafKeys(role, this.defKeys)
      this.setRightDialogVisible = true
    },
    // 通过递归的形式，获取角色下所有三级权限的id，并保存到defKeys数组中
    getLeafKeys(node, arr) {
      // 如果当前node节点不包含children属性，则是三级节点
      if(!node.children) {
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafKeys(item, arr)
      })
    },
    // 监听关闭分配对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(`roles/${this.roleId}/rights`, {rids: idStr})
      if(res.meta.status !== 200) {
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible = false
    }
  }
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop{
  border-top: 1px solid #eee;
}
.bdbottom{
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>
